# NTSB investigations: AiResearch TPE331 series, OK

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB FTW96IA248](https://openairdocs.org/ntsb/FTW96IA248.md): Fairchild SA227-DC · Enid, OK · Incident · No injuries · Incident investigation · Final report · Jun 11, 1996 · N850LS · No damage
  > failure of the accessory drive bearing, causing the accessory drive gear teeth to shear and disengage the fuel pump accessory drive shaft, resulting in a disabled fuel pump and subsequent fuel starvation.
- [NTSB FTW86LA120](https://openairdocs.org/ntsb/FTW86LA120.md): Beech E18S · Oklahoma City, OK · Accident · No injuries · Limited investigation · Final report · Jun 24, 1986 · N2001C · 2 aircraft · Minor damage
  > A swearingen SA-226TC, N516SS, was lndd at ngt on rwy 17L. After lndg, the flt crew exited onto taxiway-E3 (TWY-E3), where they were instructed by tower to hold. A Beech E18S, N2001C, was then lndd on the same rwy (rwy 17L) & its plt also exited onto TWY-E3.…

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."eventStateOrRegion" = 'OK' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('01514', '01517'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&state=OK

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OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.